Gurobi 5.0.1 (linux64) logging started Tue Nov 20 12:32:13 2012

Optimize a model with 294 rows, 107 columns and 588 nonzeros
Presolve removed 66 rows and 3 columns
Presolve time: 0.00s
Presolved: 228 rows, 104 columns, 484 nonzeros
Variable types: 0 continuous, 104 integer (104 binary)
Found heuristic solution: objective 40.0000000

Root relaxation: objective 4.750000e+01, 145 iterations, 0.00 seconds

    Nodes    |    Current Node    |     Objective Bounds      |     Work
 Expl Unexpl |  Obj  Depth IntInf | Incumbent    BestBd   Gap | It/Node Time

     0     0   47.50000    0   87   40.00000   47.50000  18.8%     -    0s
     0     0   46.00000    0   97   40.00000   46.00000  15.0%     -    0s
H    0     0                      41.0000000   46.00000  12.2%     -    0s
     0     0   45.69231    0   96   41.00000   45.69231  11.4%     -    0s
     0     0   45.36957    0   98   41.00000   45.36957  10.7%     -    0s
     0     0   44.94444    0   98   41.00000   44.94444  9.62%     -    0s
     0     0   44.55769    0  102   41.00000   44.55769  8.68%     -    0s
     0     0   44.34054    0  102   41.00000   44.34054  8.15%     -    0s
     0     0   44.26667    0  102   41.00000   44.26667  7.97%     -    0s
     0     0   44.17857    0   96   41.00000   44.17857  7.75%     -    0s
     0     0   44.15190    0  102   41.00000   44.15190  7.69%     -    0s
     0     0   44.15190    0  101   41.00000   44.15190  7.69%     -    0s
H    0     0                      42.0000000   44.15190  5.12%     -    0s
     0     2   44.15190    0  101   42.00000   44.15190  5.12%     -    0s
*    4     4               2      43.0000000   43.96296  2.24%  45.0    0s

Cutting planes:
  Gomory: 1
  Zero half: 34

Explored 5 nodes (781 simplex iterations) in 0.05 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.300000000000e+01, best bound 4.300000000000e+01, gap 0.0%